Transcript Features of Remote Access in Windows XP

Chapter Eight
Internetworking with
Remote Access
Objectives
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Understand remote access under Windows XP
Configure various remote access connection
types for a Windows XP Professional system
Install remote access hardware
Understand remote access security
Objectives
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Understand the Internet Options applet
Implement Internet Connection Sharing and the
Internet Connection Firewall
Understand the native Internet tools and utilities
Troubleshoot remote access problems
Remote Access
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You can use remote access service to logon to a
Windows XP system for user or administrative
access while you’re away from the office
Windows XP remote access configuration includes
the following components:
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Clients
Protocols
Remote Access
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Windows XP remote access configuration includes
the following components (cont.):
WAN Connectivity
 Security
 Server
 LAN protocol
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Features of Remote Access in
Windows XP
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PPP Multilink
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Allows you to increase overall throughput by
combining the bandwidth of two or more physical
communication links
Virtual private network (VPN) protocols
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Windows XP support two VPN protocols:
Point-to-Point Tunneling Protocol (PPTP)
 Layer Two Tunneling Protocol (L2TP)
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Features of Remote Access in
Windows XP
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Restartable file copy
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Automatically retransmits incomplete file transfers
produced by interruption of remote access connectivity
Provides the following:
Faster transmission of large files over lower-quality
connections
 Reduced cost from avoiding retransmission of the whole file
 Reduced frustrations from interrupted transfers
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Features of Remote Access in
Windows XP
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Idle disconnect
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Autodial and log-on dial
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Breaks off a remote access connection after a specified
period of inactivity
You can configure remote access to automatically connect
and retrieve files and applications stored on a remote system
Client and server enhancements
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Windows XP remote access includes a number of client and
server components that allow third-party vendors to develop
remote access and dial-up networking applications
Features of Remote Access in
Windows XP
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Look and feel
Windows XP remote access has undergone some
changes since Windows 2000
 Remote access capabilities have now been integrated
with the networking components
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Callback security
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You can control access to the system from specified
phone numbers by using the Callback feature
Features of Remote Access in
Windows XP
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WAN Connectivity
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Wide area networks (WANs) link sites that are often a
considerable physical distance apart
You can improve the performance of remote accessbased WANs in one of three ways:
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Increasing bandwidth of the remote access connection
Multilinking communication links using PPP Multilink
Implementing PPTP over the Internet
Internet Network Access
Protocols
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PPP Multilink
Variation of PPP that enables you to create one large
high-bandwidth pipe by banding together multiple
PPP channels
 The remote access protocol used in establishing and
maintaining a WAN link is dependent on the client
and server OS and LAN protocols
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Internet Network Access
Protocols
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Point-to-Point Protocol (PPP)
Current standard for remote access
 Remotes access protocol standards are defined in
RFCs published by the IETF and other working
groups
 Microsoft recommends using PPP because it is
flexible and is the industry standard
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Internet Network Access
Protocols
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Point-to-Point-Tunneling Protocol (PPTP)
Allows you to establish a secure remote access
pipeline over the public Internet and to “tunnel”
IPX or TCP/IP traffic inside PPP packets
 L2TP is a similar protocol developed by Cisco for
use with IPSec to support secure VPN links
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From a user’s perspective, it operates in the same manner
as PPTP
Internet Network Access
Protocols
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PPTP’s significant features include:
Transmission costs
 Hardware costs
 Administrative overhead
 Improved security
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Internet Network Access
Protocols
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PPP multilink protocol (PPP-MP)
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Combines two or more physical remote access links
into one logical bundle with greater bandwidth
Serial Line Internet Protocol (SLIP)
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One of the first protocols developed specifically for
TCP/IP support over dial-up connections
Internet Network Access
Protocols
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Telephony features
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TAPI
The remote access Telephony API
 Supplies a uniform way of accessing fax, data, and voice
 Part of the Windows Open System Architecture (WOSA)
developed to aid third-party vendors in designing
powerful, integrated telephony applications
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Remote Access Configuration
Figure 8-1: Network Connections
Remote Access Configuration
Figure 8-2: New Connection Wizard
Connecting to the Internet
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The Connect t the Internet Wizard selection can
be used to:
Choose from a list Internet service providers (ISPs)
 Set up my connection manually
 Use the CD provided by an ISP
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Connecting to the Internet
Figure 8-3: The Connection Status dialog box
Connecting to the Internet
Figure 8-4: A connection object’s Properties dialog box, General tab
Connecting to the Internet
Figure 8-5: A connection object’s Properties dialog box, Options tab
Connecting to the Internet
Figure 8-6: The Automatic Dialing And Hanging Up dialog box
Connecting to the Internet
Figure 8-7: A connection object’s Properties dialog box, Security tab
Connecting to the Internet
Figure 8-8: The Advanced Security Setting dialog box
Connecting to the Internet
Figure 8-9: A connection object’s Properties dialog box, Networking tab
Connecting to the Internet
Figure 8-10: A connection object’s Properties dialog box, Advanced tab
Connecting to the Network at My
Workplace
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Telecommuters and mobile personnel often need to
communicate with the office LAN for a wide variety of
purposes
Because a remote access link supports all network
functions, remote connections to the LAN are very
useful
The Connect to network at my workplace option on the
second page of the New Connection Wizard is used to
create direct dial-up and VPN connections to an office
LAN
Setting Up an Advanced
Connections
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The Set Up An Advanced Connection option on
the second page of the New Connection Wizard
can be used to:
Establish a direct connection between two systems
 Configure the system to answer inbound dial-up calls
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These are very different activities
Accepting Incoming Connections
Figure 8-11: An
Incoming
Connections
Properties dialog
box, General tab
Installing Remote Access
Hardware
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Before any remote access connection can be
established, hardware required by that connection
must be physically present and its drivers properly
installed
Under Windows XP, the process of installing
hardware is often simple and requires little user input
Upon boot-up, Windows XP inspect the hardware and
attempts to identify any new devices
Phone and Modem Options
Figure 8-12: The Edit Location dialog box, General tab
Remote Access Security
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Remote access security is built on Windows XP’s local
and network security
Remote access boasts several additional security
measures to aid in keeping break-ins and unauthorized
access to a minimum
Dial-up connection objects have authentication and
encryption security options
Remote access does not restrict the ability to dial out
from a Windows system
Internet Options Applet
Figure 8-13: Internet Options applet
Internet Connection Sharing
(ICS)
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Used to share a single network connection with
a small group of networked computers
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The shared connection can be a link to the Internet
or any type of network
By enabling sharing for a connection object, you
allow other computers on your network to
access resources over that external link
Internet Connection Firewall
(ICF)
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A security measure
for protecting
network connections
from unwanted
traffic
Figure 8-14: Advanced Settings dialog box, General tab
Windows XP and the Internet
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Windows XP features a number of tools to help
you access the vast resources of the Internet:
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Internet Explorer
Outlook Express
FTP client
Telnet client
Internet Information Server (IIS)
Order Prints Online
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Feature of the My Pictures folder and any media
folder defined as an image repository
This command launches the Online Print
Ordering Wizard
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The Wizard requires that Internet access be available
Client vs. Server-Based Remote
Access
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Choosing which platform to use as a remote
access server is usually straightforward
It is clear that a small workgroup network can use
Windows XP Professional as its remote access
server if it can operate within the connection
limitations
 If an organization requires greater flexibility and
connectivity, a Windows Server should be selected to
act as the remote access server
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Remote Access Troubleshooting
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Your first approach to a remote access problem
should include considerations for:
Physical connections
 Power to external devices
 Properly installed and updated drivers
 Properly configured settings
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Remote Access Troubleshooting
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Your first approach to a remote access problem
should include considerations for (cont.):
Correct authentication credentials
 Similar encryption or security requirements
 Proper protocol requirements and settings
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Chapter Summary
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Be familiar with the significant features of
remote access in Windows XP
Understand:
Remote access WAN connections and protocols
 How to install and configure remote access
 How to take advantage of remote access dial-up
networking and security features
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Chapter Summary
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Be familiar with how to dial into your Windows XP
Professional system from the outside or use it to dial
out to a service provider
Understand the Internet access features built into
Windows XP and how they can be employed to gain
access to vast public and private resources
Windows XP is designed to participate in virtual
private networks (VPNs) by establishing an encrypted
link between two system over the Internet